Re: [PATCH v3 02/25] mm: Add folio_pgdat

2021-03-01 Thread Zi Yan 
On 28 Jan 2021, at 2:03, Matthew Wilcox (Oracle) wrote:

> This is just a convenience wrapper for callers with folios; pgdat can
> be reached from tail pages as well as head pages.
>
> Signed-off-by: Matthew Wilcox (Oracle) 
> ---
>  include/linux/mm.h | 5 +
>  1 file changed, 5 insertions(+)
>
> diff --git a/include/linux/mm.h b/include/linux/mm.h
> index f20504017adf..7d787229dd40 100644
> --- a/include/linux/mm.h
> +++ b/include/linux/mm.h
> @@ -1503,6 +1503,11 @@ static inline pg_data_t *page_pgdat(const struct page 
> *page)
>   return NODE_DATA(page_to_nid(page));
>  }
>
> +static inline pg_data_t *folio_pgdat(const struct folio *folio)
> +{
> + return page_pgdat(&folio->page);
> +}
> +
>  #ifdef SECTION_IN_PAGE_FLAGS
>  static inline void set_page_section(struct page *page, unsigned long section)
>  {
> -- 
> 2.29.2

LGTM.

Reviewed-by: Zi Yan 

—
Best Regards,
Yan Zi


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[PATCH v3 02/25] mm: Add folio_pgdat

2021-01-27 Thread Matthew Wilcox (Oracle) 
This is just a convenience wrapper for callers with folios; pgdat can
be reached from tail pages as well as head pages.

Signed-off-by: Matthew Wilcox (Oracle) 
---
 include/linux/mm.h | 5 +
 1 file changed, 5 insertions(+)

diff --git a/include/linux/mm.h b/include/linux/mm.h
index f20504017adf..7d787229dd40 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1503,6 +1503,11 @@ static inline pg_data_t *page_pgdat(const struct page 
*page)
return NODE_DATA(page_to_nid(page));
 }
 
+static inline pg_data_t *folio_pgdat(const struct folio *folio)
+{
+   return page_pgdat(&folio->page);
+}
+
 #ifdef SECTION_IN_PAGE_FLAGS
 static inline void set_page_section(struct page *page, unsigned long section)
 {
-- 
2.29.2